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Title | Structure of SCF-FBXL17-BACH1BTB E3 ligase complex | |||||||||
![]() | The composite EM map of SCF(CUL1RBX1SKP1)-FBXL17-BACH1BTB by combining focused refined FBXL17-BACH1BTB (filtered by DeepEMhancer) and global EM map. | |||||||||
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![]() | SCF / FBXL17 / BACH1 / F-box protein / E3 ligase / LIGASE | |||||||||
Function / homology | ![]() Regulation of HMOX1 expression and activity / Parkin-FBXW7-Cul1 ubiquitin ligase complex / F-box domain binding / PcG protein complex / ligand-modulated transcription factor activity / cullin-RING ubiquitin ligase complex / positive regulation of ubiquitin protein ligase activity / Cul7-RING ubiquitin ligase complex / maintenance of protein location in nucleus / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling ...Regulation of HMOX1 expression and activity / Parkin-FBXW7-Cul1 ubiquitin ligase complex / F-box domain binding / PcG protein complex / ligand-modulated transcription factor activity / cullin-RING ubiquitin ligase complex / positive regulation of ubiquitin protein ligase activity / Cul7-RING ubiquitin ligase complex / maintenance of protein location in nucleus / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / regulation of smoothened signaling pathway / regulation of metabolic process / neural crest cell differentiation / SCF ubiquitin ligase complex / NFE2L2 regulating anti-oxidant/detoxification enzymes / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / ubiquitin ligase complex scaffold activity / entrainment of circadian clock by photoperiod / Prolactin receptor signaling / protein quality control for misfolded or incompletely synthesized proteins / cullin family protein binding / protein monoubiquitination / ubiquitin-like ligase-substrate adaptor activity / protein K48-linked ubiquitination / Nuclear events stimulated by ALK signaling in cancer / intrinsic apoptotic signaling pathway / Regulation of BACH1 activity / MAP3K8 (TPL2)-dependent MAPK1/3 activation / molecular function activator activity / animal organ morphogenesis / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / Vpu mediated degradation of CD4 / Dectin-1 mediated noncanonical NF-kB signaling / Activation of NF-kappaB in B cells / Degradation of GLI1 by the proteasome / Negative regulation of NOTCH4 signaling / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Iron uptake and transport / Heme signaling / Degradation of GLI2 by the proteasome / GLI3 is processed to GLI3R by the proteasome / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / Degradation of beta-catenin by the destruction complex / beta-catenin binding / NOTCH1 Intracellular Domain Regulates Transcription / CLEC7A (Dectin-1) signaling / SCF(Skp2)-mediated degradation of p27/p21 / DNA-binding transcription repressor activity, RNA polymerase II-specific / FCERI mediated NF-kB activation / Constitutive Signaling by NOTCH1 PEST Domain Mutants / Constitutive Signaling by NOTCH1 HD+PEST Domain Mutants / RNA polymerase II transcription regulator complex / G1/S transition of mitotic cell cycle / Interleukin-1 signaling / Orc1 removal from chromatin / protein polyubiquitination / Regulation of RUNX2 expression and activity / Cyclin D associated events in G1 / Regulation of PLK1 Activity at G2/M Transition / : / Antigen processing: Ubiquitination & Proteasome degradation / Downstream TCR signaling / Neddylation / nervous system development / DNA-binding transcription activator activity, RNA polymerase II-specific / protein-macromolecule adaptor activity / positive regulation of canonical NF-kappaB signal transduction / proteasome-mediated ubiquitin-dependent protein catabolic process / cell population proliferation / DNA-binding transcription factor activity, RNA polymerase II-specific / protein ubiquitination / chromatin remodeling / protein domain specific binding / RNA polymerase II cis-regulatory region sequence-specific DNA binding / DNA-binding transcription factor activity / DNA repair / centrosome / heme binding / ubiquitin protein ligase binding / regulation of DNA-templated transcription / regulation of transcription by RNA polymerase II / chromatin / negative regulation of transcription by RNA polymerase II / nucleoplasm / nucleus / plasma membrane / cytosol / cytoplasm Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.1 Å | |||||||||
![]() | Shi H / Cao S | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Recognition of BACH1 quaternary structure degrons by two F-box proteins under oxidative stress. Authors: Shiyun Cao / Sheena Faye Garcia / Huigang Shi / Ellie I James / Yuki Kito / Hui Shi / Haibin Mao / Sharon Kaisari / Gergely Rona / Sophia Deng / Hailey V Goldberg / Jackeline Ponce / Beatrix ...Authors: Shiyun Cao / Sheena Faye Garcia / Huigang Shi / Ellie I James / Yuki Kito / Hui Shi / Haibin Mao / Sharon Kaisari / Gergely Rona / Sophia Deng / Hailey V Goldberg / Jackeline Ponce / Beatrix Ueberheide / Luca Lignitto / Miklos Guttman / Michele Pagano / Ning Zheng / ![]() ![]() ![]() Abstract: Ubiquitin-dependent proteolysis regulates diverse cellular functions with high substrate specificity, which hinges on the ability of ubiquitin E3 ligases to decode the targets' degradation signals, i. ...Ubiquitin-dependent proteolysis regulates diverse cellular functions with high substrate specificity, which hinges on the ability of ubiquitin E3 ligases to decode the targets' degradation signals, i.e., degrons. Here, we show that BACH1, a transcription repressor of antioxidant response genes, features two distinct unconventional degrons encrypted in the quaternary structure of its homodimeric BTB domain. These two degrons are both functionalized by oxidative stress and are deciphered by two complementary E3s. FBXO22 recognizes a degron constructed by the BACH1 BTB domain dimer interface, which is unmasked from transcriptional co-repressors after oxidative stress releases BACH1 from chromatin. When this degron is impaired by oxidation, a second BACH1 degron manifested by its destabilized BTB dimer is probed by a pair of FBXL17 proteins that remodels the substrate into E3-bound monomers for ubiquitination. Our findings highlight the multidimensionality of protein degradation signals and the functional complementarity of different ubiquitin ligases targeting the same substrate. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 95.4 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 29.8 KB 29.8 KB | Display Display | ![]() |
Images | ![]() | 115.7 KB | ||
Masks | ![]() | 103 MB | ![]() | |
Filedesc metadata | ![]() | 7.4 KB | ||
Others | ![]() ![]() ![]() ![]() ![]() ![]() | 95 MB 95.4 MB 95.2 MB 85.5 MB 95.3 MB 95.3 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 930.2 KB | Display | ![]() |
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Full document | ![]() | 929.7 KB | Display | |
Data in XML | ![]() | 13.5 KB | Display | |
Data in CIF | ![]() | 15.9 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8ubtMC ![]() 8ua3C ![]() 8ua6C ![]() 8uahC ![]() 8ubuC ![]() 8ubvC M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Annotation | The composite EM map of SCF(CUL1RBX1SKP1)-FBXL17-BACH1BTB by combining focused refined FBXL17-BACH1BTB (filtered by DeepEMhancer) and global EM map. | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. generated in cubic-lattice coordinate | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.743 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Mask #1
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Projections & Slices |
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Density Histograms |
-Additional map: The composite EM map of SCF(CUL1RBX1SKP1)-FBXL17-BACH1BTB by combining...
File | emd_42102_additional_1.map | ||||||||||||
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Annotation | The composite EM map of SCF(CUL1RBX1SKP1)-FBXL17-BACH1BTB by combining focused refined FBXL17-BACH1BTB and global EM map. | ||||||||||||
Projections & Slices |
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Density Histograms |
-Additional map: The global EM map of SCF(CUL1RBX1SKP1)-FBXL17-BACH1BTB generated by...
File | emd_42102_additional_2.map | ||||||||||||
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Annotation | The global EM map of SCF(CUL1RBX1SKP1)-FBXL17-BACH1BTB generated by Non-uniform refinement in cryoSPARC. | ||||||||||||
Projections & Slices |
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Density Histograms |
-Additional map: The local refinement EM map of SCF(CUL1RBX1SKP1)-FBXL17-BACH1BTB with...
File | emd_42102_additional_3.map | ||||||||||||
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Annotation | The local refinement EM map of SCF(CUL1RBX1SKP1)-FBXL17-BACH1BTB with a mask including the density of Fbxl17-BACH1BTB. | ||||||||||||
Projections & Slices |
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Density Histograms |
-Additional map: The DeepEMhancer filtered local refinement EM map of...
File | emd_42102_additional_4.map | ||||||||||||
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Annotation | The DeepEMhancer filtered local refinement EM map of SCF(CUL1RBX1SKP1)-FBXL17-BACH1BTB with a mask including the density of Fbxl17-BACH1BTB. | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: The half map of SCF-FBXL17-BACH1BTB complex generated by...
File | emd_42102_half_map_1.map | ||||||||||||
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Annotation | The half map of SCF-FBXL17-BACH1BTB complex generated by Non-uniform reifnement in cryoSPARC. | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: The half map of SCF-FBXL17-BACH1BTB complex generated by...
File | emd_42102_half_map_2.map | ||||||||||||
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Annotation | The half map of SCF-FBXL17-BACH1BTB complex generated by Non-uniform reifnement in cryoSPARC. | ||||||||||||
Projections & Slices |
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Density Histograms |
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Sample components
-Entire : The SCF-F-box protein with BACH1 BTB Domain, SCF-BFXL17-BACH1BTB
Entire | Name: The SCF-F-box protein with BACH1 BTB Domain, SCF-BFXL17-BACH1BTB |
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Components |
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-Supramolecule #1: The SCF-F-box protein with BACH1 BTB Domain, SCF-BFXL17-BACH1BTB
Supramolecule | Name: The SCF-F-box protein with BACH1 BTB Domain, SCF-BFXL17-BACH1BTB type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: ![]() |
-Macromolecule #1: Cullin-1
Macromolecule | Name: Cullin-1 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 88.501945 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: KQIGLDQIWD DLRAGIQQVY TRQSMAKSRY MELYTHVYNY CTSVHQSNQA RGAGVPPSKS KKGQTPGGAQ FVGLELYKRL KEFLKNYLT NLLKDGEDLM DESVLKFYTQ QWEDYRFSSK VLNGICAYLN RHWVRRECDE GRKGIYEIYS LALVTWRDCL F RPLNKQVT ...String: KQIGLDQIWD DLRAGIQQVY TRQSMAKSRY MELYTHVYNY CTSVHQSNQA RGAGVPPSKS KKGQTPGGAQ FVGLELYKRL KEFLKNYLT NLLKDGEDLM DESVLKFYTQ QWEDYRFSSK VLNGICAYLN RHWVRRECDE GRKGIYEIYS LALVTWRDCL F RPLNKQVT NAVLKLIEKE RNGETINTRL ISGVVQSYVE LGLNEDDAFA KGPTLTVYKE SFESQFLADT ERFYTRESTE FL QQNPVTE YMKKAEARLL EEQRRVQVYL HESTQDELAR KCEQVLIEKH LEIFHTEFQN LLDADKNEDL GRMYNLVSRI QDG LGELKK LLETHIHNQG LAAIEKCGEA ALNDPKMYVQ TVLDVHKKYN ALVMSAFNND AGFVAALDKA CGRFINNNAV TKMA QSSSK SPELLARYCD SLLKKSSKNP EEAELEDTLN QVMVVFKYIE DKDVFQKFYA KMLAKRLVHQ NSASDDAEAS MISKL KQAC GFEYTSKLQR MFQDIGVSKD LNEQFKKHLT NSEPLDLDFS IQVLSSGSWP FQQSCTFALP SELERSYQRF TAFYAS RHS GRKLTWLYQL SKGELVTNCF KNRYTLQAST FQMAILLQYN TEDAYTVQQL TDSTQIKMDI LAQVLQILLK SKLLVLE DE NANVDEVELK PDTLIKLYLG YKNKKLRVNI NVPMKTEQKQ EQETTHKNIE EDRKLLIQAA IVRIMKMRKV LKHQQLLG E VLTQLSSRFK PRVPVIKKCI DILIEKEYLE RVDGEKDTYS YLA UniProtKB: Cullin-1 |
-Macromolecule #2: S-phase kinase-associated protein 1
Macromolecule | Name: S-phase kinase-associated protein 1 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 18.679965 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MPSIKLQSSD GEIFEVDVEI AKQSVTIKTM LEDLGMDDEG DDDPVPLPNV NAAILKKVIQ WCTHHKDDPP PPEDDENKEK RTDDIPVWD QEFLKVDQGT LFELILAANY LDIKGLLDVT CKTVANMIKG KTPEEIRKTF NIKNDFTEEE EAQVRKENQW C EEK UniProtKB: S-phase kinase-associated protein 1 |
-Macromolecule #3: F-box/LRR-repeat protein 17
Macromolecule | Name: F-box/LRR-repeat protein 17 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 44.505512 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: CHREPPPETP DINQLPPSIL LKIFSNLSLD ERCLSASLVC KYWRDLCLDF QFWKQLDLSS RQQVTDELLE KIASRSQNII EINISDCRS MSDNGVCVLA FKCPGLLRYT AYRCKQLSDT SIIAVASHCP LLQKVHVGNQ DKLTDEGLKQ LGSKCRELKD I HFGQCYKI ...String: CHREPPPETP DINQLPPSIL LKIFSNLSLD ERCLSASLVC KYWRDLCLDF QFWKQLDLSS RQQVTDELLE KIASRSQNII EINISDCRS MSDNGVCVLA FKCPGLLRYT AYRCKQLSDT SIIAVASHCP LLQKVHVGNQ DKLTDEGLKQ LGSKCRELKD I HFGQCYKI SDEGMIVIAK GCLKLQRIYM QENKLVTDQS VKAFAEHCPE LQYVGFMGCS VTSKGVIHLT KLRNLSSLDL RH ITELDNE TVMEIVKRCK NLSSLNLCLN WIINDRCVEV IAKEGQNLKE LYLVSCKITD YALIAIGRYS MTIETVDVGW CKE ITDQGA TLIAQSSKSL RYLGLMRCDK VNEVTVEQLV QQYPHITFST VLQDCKRTLE RAYQMGWTPN MSAASS UniProtKB: F-box/LRR-repeat protein 17 |
-Macromolecule #4: Transcription regulator protein BACH1
Macromolecule | Name: Transcription regulator protein BACH1 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 13.839761 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: SVFAYESSVH STNVLLSLND QRKKDVLCDV TIFVEGQRFR AHRSVLAACS SYFHSRIVGQ ADGELNITLP EEVTVKGFEP LIQFAYTAK LILSKENVDE VCKCVEFLSV HNIEESCFQF LKF UniProtKB: Transcription regulator protein BACH1 |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 |
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Grid | Model: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 300 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE |
Vitrification | Cryogen name: ETHANE / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
Microscope | TFS KRIOS |
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Image recording | Film or detector model: FEI FALCON IV (4k x 4k) / Average electron dose: 60.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 25.0 µm / Nominal defocus min: 5.0 µm |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |